年增可采储量是评价油气田开发效果的重要参数。由于油气田特性在开发过程中是动态变化的,给可采储量预测带来了一定难度。文中提出采用轮廓线拟合和切线相结合的方法(即平滑切线法)预测年增可采储量,是对现有预测模型在应用方法上的一种创新,该方法适合于大型油气田中期以及中小油气田后期的开发评价,具有较高的预测精度。 The annual increase of recoverable reserves is an important parameter for evaluating the development effect of oil and gas fields. As the characteristics of oil and gas fields are dynamically changing during the development, recoverable reserves have brought some difficulties. The paper proposes that the combination of contour line fitting and tangent (that is, smooth tangent method) can predict the annual recoverable reserves, which is an innovation on the application of the existing prediction model. This method is suitable for medium and small oil and gas fields Development and evaluation of the late oil and gas fields, with high prediction accuracy.